Lillian Hellman Dramatizes Altruistic Actions by Barry David Horwitz Berkeley Rep’s choice of Lillian Hellman’s “Watch on the Rhine” (1941) plunges us into the pre-World War Two time of indecision, cowardice, and sporadic bravery. Hellman’s play illuminates the 1930s, when “good” folks could still turn their eyes away from the Nazi invasions, and live in their isolated bubbles. The U.S. is at a crossroads in 1941, even though Fanny Farrelly (sprightly Caitlin O’Connell), D.C. social butterfly, doesn’t get it. Maybe…